Two lignans, phyllamycin B and retrojusticidin B isolated from Phyllanthus myrtifolius Moon
have been demonstrated to have a strong inhibitory effect on human immunodeficiency virus-…

Because tyrosinase catalyzes melanin synthesis, tyrosinase inhibitors are important in cosmetic
skin-whitening. Oxidative stress contributes to skin aging and can adversely affect skin …

The antihyperglycemic action of puerarin, purified from the roots of Pueraria lobata, was
investigated in streptozotocin-induced diabetic rats (STZ-diabetic rats). Bolus intravenous …

Emodin (1,3,8-trihydroxy-6-methylanthraquinone) is an active constituent of Rheum
palmatum, and showed inhibitory activity on lipopolysaccharide-induced NO production in our …

The antihyperglycemic effect of caffeic acid, one of the phenolic compounds contained in the
fruit of Xanthium strumarium, was investigated. After an intravenous injection of caffeic acid …

The role of heme oxygenase-1 (HO-1) played in the inhibitory mechanism of flavonoids in
lipopolysaccharide (LPS)-induced responses remained unresolved. In the present study, …

Paeoniflorin and 8-debenzoylpaeoniflorin were isolated from the dried root of Paeonia
lactiflora Pall.(Ranunculaceae). They produced a significant blood sugar lowering effect in …

The tannins are natural polyphenols, able to precipitate water-soluble alkaloids and
possess an inhibitory action on the angiotensin converting enzyme (ACE). We identified 18 …

Punicalagin and punicalin, isolated from the leaves of Terminalia catappa L., are used to
treat dermatitis and hepatitis. Both compounds have strong antioxidative activity. The anti-…

The antihyperglycemic action of myricetin, purified from the aerial part of Abelmoschus
moschatus (Malvaceae), was investigated in streptozotocin-induced diabetic rats (STZ-diabetic …